Vacuum cleaning apparatus.



L. w. G. FLYNTQ VACUUM CLEANING APPARATUS.

APPLICATION PILBDAUG. 9. L909.

997,548. -Patented'Ju1y 11', 1911.

WITNESSES: INVENTORi m dWL ww.' f ,6

. UNITED s Afrns PATENT orricn.

LOUIS W. G. FLYNT, OF ROCHESTER, NEW YORK, ASSIGNOR TO' DOMESTIC APPLIANCES COMPANY, A CORPORATION OF NEW YORK.

vacuum cLEAmNe' Arranarns.

This invention has for its object a vacuum cleaning apparatus that will be adaptedfor many operations of cleaning in private houses, and other buildings, such, for example, as the collection of dust from floors,

Walls, draperies, etc. e It also embodies means for separating the heavier matter collected from the light dust,- and means for incinerating the dust and afterward expelling it.

. formed at the outlet of the ing to the :efiiciency The drawing shows a central, vertical section of an apparatus embodying the inventions, which consists of a casing 10 that is lined with suitable refractory material, and contains a flash steam generator, the latter consisting of a series of spiral coils 9 of tubing, one end of which is connected to thetwater supply, and the other terminating in the steam jetnozzle 6. Below the coils- 9, and. also within the casin 10 is a gas or oil burner 10 of annular tbrm which surrounds an air ejector draft pipe 7, the out side of which-is protected from the heat of the burner by a covering of fire-clay or like substance. The contracted entrance of this draft pipe Jeriorates the upper cover of a centrifugal iiust separatorl, or" a form in common use, and which is furnished at the bOiJhO HI with a suitably hinged door through which refuse may be taken from it. The discharge end of the ejector draft pipe is arranged in such relation to the flue casing 10 where it joins the stack 8, that the dust laden air is compelled to mingle with hot products ofi'combustion from the vburner 10. In this Way the dust is sterilized and partially or completely incinerated. A v rther ad antage" of this relative location of draft pipe and fine is that it increases the flue draft materially, and this, besides contributof the burner, helps to disperse-the ashes of the dust consumed.

.There is a main vacuum service pipe rep resented by 3, that discharges tangentially into the centrifugal dust separatoi: This- Specification of Letters Patent. Application filed August 9, 1909. Serial No. 512,095;

have invented certain new and Pat-elites July it, 1911 service pipe by various branches leads to convenient points in the building where su t able terminals maybe provided for the at tachm'ent of a hose pipe that carries the suctron nozzlethroug which the dust is gathered up. i

The water fed to the lated by a needle valv'clQ, and is turned on and shut ad by means ot'a' cock 13, that'can be operated from a rod or cord 14.

The cook a distance by pipe 15, so that it also controls the gas supply to the burner 10. In'this way the 'water and gascan be turned on and'ofi simultaneou'sly, for a pilot light at the end of a tube burns continuously. Accordingly, when the water is the burner 10 is at the same time; lighted and almost instantly steam issues from the the steam in' the generator can only equal that. of the nozhle 6. But the pressure of Water in the feed pipe 11, and if this pressure proves in any case too low to create the desired vacuum. a suitable pressure intensitying device 17, such as a hydraulic feed pump, may be used to increase the Water:

pressure. 1

A drain cock 11 for an inverted 'Upipe 11 in the Water connection, the function of which will presently be described, discharges from a pipe 11, the controlling means of the cock 13 in the manner shown, as by a rod 11 A needle valve 12 afiords means for regulating the quantity of water that is supplied to the steam generator coils.

The U pipe 11, together with the drain cock 1'1 provide means for postponing the arrival of the feed Water at the generator coils 9, until enough time shall hane elapsed after the lighting of the burner 10 to raise the temperature of the (toils sufliciently to evaporate the water during its passage through the heater to the nozzle 6.

generator 9 is r'egu- $5 13 is also connected with-the gas turned on by pulling the cord I 14, and begins to flow into the generator,-

and may be connected to A'small fuel pipe 16 serves as a pilot light for igniting the large burnenand is kept constantly burning.

The operation of the-device is as follows: The cock 13 is first opened by the rod 14, Which at the same time closes the drain cook 11. This admits both a supply of fuel to the burner 10, and. Water topass the needle valve '12, whence it enters the inverted U pipe 11%. Before the Water has time to draft pipe 7, which it enters and from which it is discharged into the incinerating compartment 9 together with whatever dust may be suspended in it. In the compartment 9*, dust and air mingle at the throat of the stack 8 with the hot gases that rise from the burner 10. The current'of air is-.

suing from the ejector draft pipe also causes an' increased draft in the stack, which greatly aids the dispersion of the now incinerated dust.

The degree of vacuum existing in the service pipe 3 may be ascertained by means of a vacuum gage 18 of any suitable form, having a connection with the inside-of the centrifugal separator. By observing the vacuum age and adjusting the needle valve 12, and the quantity of fuel supplied to the burner 10, the apparatus can be regulated to the work requlred of it. Having once secured the adjustments, they need no further change for work of the. same kind, and the starting and stopping of the apparatus is accomplished by raising or lowering the rod or chain 14.

It is obvious that the apparatus is not limited to the exact form of construction shown, and that other arrangement of the elements can be made without departing from the spirit of the invention.

WhatI claim is 1. In combination, a dust-separating and incinerating receptacle comprising a dust-separating compartment, provided with an inlet, for separating the heavier noninflammable particles from the lighter inflammable particles, and an incinerating compartment in said receptacle having means therein for incinerating said inflammable particles, and means for inducing :dust laden air into said dust separating compartment and for conveying inflammable particles from said dustseparating compartment to said dust-incinerating compartment.

2. In combination, a dust-separating and incinerating receptacle comprising a dustseparating compartment, provided with an inlet, for separating the heavier noninfiammable particles from the lighter inflammable particles, and an incinerating compartment in said receptacle having means therein f or incinerating said inflammable particles, and means for inducing dust laden air into said dust separating compartment and for exhausting air from the separating compartment and discharging it, together with the lighter particles of dust thereby collected within said separating compartment, into said incine'ratingcompartment.

3. In combination, adust-separating and incinerating receptacle comprising a dust: separating compartment, provided with an inlet, for separating the heavier noninflammable particles from the lighter inflammable particles, and an incinerating compartment in said receptacle having means therein for incinerating said inflammable particles, that is connected by; a passa e withf said separating compartment, an an air ejector arranged to discharge through said passage and thereby withdraw the lighter particles of dust from said separating compartment and discharge them into said incmerating compartment.

LOUIS W. G. FLYNT;

lVitnesses I L. THON, C. W. CARROLL. 

